ENERGY STAR is a joint program of the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy helping us all save
money and protect the environment through energy efficient products and practices. Results are already adding up. Americans, with the
help of the ENERGY STAR program, saved enough energy in 2007 alone to avoid greenhouse gas emissions equivalent to those from 27
million cars - all while saving $16 billion on their utility bills.

Energy efficient windows are manufactured so that heat is kept inside the home in winter and outside the home in summer. This reduces
heating and cooling costs and minimizes energy consumption impacting the environment. HVAC equipment required for keeping the home
comfortable. In climates that mainly require cooling, windows have represented a major source of unwanted heat gain. In recent years,
windows have undergone a technological revolution.